Peter M. Merrigan

Attorney Peter M. Merrigan has built a strong legal reputation representing individuals harmed in serious personal injury and liability cases. His experience spans motor vehicle collisions, wrongful death claims, maritime incidents, and defective product cases. He is known for pursuing justice with integrity through trial, arbitration, and negotiation.

Merrigan earned his high school diploma from the Loomis Chaffee School, then completed his Bachelor of Arts at James Madison University. He later received his Juris Doctor, cum laude, from the New England School of Law in Boston. While there, he was honored with the CALI Excellence for the Future Award in Negotiation and Constitutional Law.

Before entering civil litigation, Merrigan served as a Rule 3:03 prosecutor in Suffolk County, where he represented the Commonwealth of Massachusetts in arraignments, motions, and trials. This prosecutorial experience gave him vital courtroom knowledge that now strengthens his plaintiff advocacy in civil trials and injury cases.

Merrigan is fully licensed to practice law in Massachusetts, Pennsylvania, and the United States District Court for Massachusetts. He is a dedicated litigation attorney, devoting 100% of his practice to advocating for the injured. His results include multimillion-dollar verdicts in personal injury, wrongful death, and product liability lawsuits.

Over the years, Peter M. Merrigan has been repeatedly recognized by his peers and major legal organizations. He has been selected as a “Super Lawyer” in Boston from 2019 to 2023 and was named among the “Top 40 Under 40 Trial Attorneys” between 2015 and 2018. In 2024, The Best Lawyers in America® honored him for his work in mass tort and product liability litigation.

Merrigan is an active member of the Massachusetts Academy of Trial Attorneys, Boston Bar Association, and National Lawyers Guild. In addition to his legal service, he volunteers with Big Brothers Big Sisters of Greater Boston, continuing his commitment to community support. Merrigan is widely respected for his dedication, results, and leadership in the personal injury field.

Law Office Affiliations

• Partner, Sweeney Merrigan Law, LLP
• Member, Massachusetts Academy of Trial Attorneys
• Member, Boston Bar Association
• Member, Massachusetts Bar Association
• Member, National Lawyers Guild

Licensed State

• Massachusetts
• Pennsylvania

Education

• New England School of Law
  Juris Doctor (JD)
• James Madison University
  Bachelor of Arts (BA)

Awards & Badges